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| author | Ming Lei <tom.leiming@gmail.com> | 2010-05-15 14:25:40 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-06-04 22:55:09 +0400 |
| commit | ce9426d1908001fb2f7b0152fbe4184bbc0c7b68 (patch) | |
| tree | 42389f116a18a2ba8c3d7b20f52d591766bb9602 /drivers/ssb/driver_chipcommon.c | |
| parent | 26b36cfefaf2be98b225e3c1a399edb0daf52ddd (diff) | |
| download | linux-ce9426d1908001fb2f7b0152fbe4184bbc0c7b68.tar.xz | |
ath9k: fix dma sync in rx path
If buffer is to be accessed by cpu after dma is over, but
between dma mapping and dma unmapping, we should use
dma_sync_single_for_cpu to sync the buffer between cpu with
device. And dma_sync_single_for_device is used to let
device gain the buffer again.
v2: Felix pointed out dma_sync_single_for_device is needed to return
buffer to device if an unsuccessful status bit check is found.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Acked-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/ssb/driver_chipcommon.c')
0 files changed, 0 insertions, 0 deletions